Siren.



M. ROELLIG. SIREN.

APPLICATION FILED SEPT.13, 1910.

M. ROBLLIG.

SIREN.

APPLICATION FILED SEPT. 13, 1910.-

1,036,722, Patented Aug. 27, 1912.

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Speciicaton of Letters Patent.

mmm-@ fing. 2?, 1912..

Application tile- September 13, wm. cz'al No. LS'SLB.

To al? 'whom may; comen/ 15e it known that L "onmno, n citizen of the' Empire oit Get nj-J., nesioing at lsilonsee, `liet-lin7 in the -ine of Germnny, have inventetl e ew enti useful Siren, of which the following is e. speoii cation;

They ltnown Simp@ sirens, oonitpi' 'ng si casing and rotary pziit provitietl on their peripheries with slots that extend redmily in one of sit-id pests vaire inclined to the onsijf ,ases in pronos: on to i ie speed ot involving; loert. 1Feeoines s i'eiv to be no lon .any tor many puposes.

My invention teintes to mpovenients in such sirens. Wheeoy not only the tone pro duced is pi'evented troni exoeetiing e. cloteiniinecl limit, 'but it also is possible to quickly :filter pit/limit consequently foe example to give signals with one und the seine sinon. which signals ooninosecl of tones of tiiei'ent pitches.

The Chiot' improvement consists in ein pioying opnositely ineiineti slots, either in the casing o1' in the rotaiy p t, sot-.as to enable the (iiiing ineciiuni itse to prevent the speed oi: the rotary port from exceeding a niecleteiinined limit.,

Another improvementconsists in device of any suitable or known eonstuetion for xm-ying at Will, it pieteired., the eren oi' number of the. slots. in the casing oi in the rotary pofftiwl there so pre'i'ei'i'efl, :L tliiifl impi'oveinent may he employed which Consists in n device ot any suitable eonsii'uotion Joi" wijting ut -will the ongle of inclination of the inolinetl slots. K

A fourth improvement. which may be inployocl in coinhiimtion with the iifst imkpi^o'\"eii\ent alone oi tolnoiliei;y with :my ot the -otlim' immovements, consists .in :i iloviffe ot any l-:nown mnsti'uotion for varying the. i i nre mi the driving me liuin luiing pnssne through the several slots, either onii or diiei'entl .L to tlesci'ihe my invention with reference to the accompanying cli-owing, in which- Figure l is :i longitudinal section of one form oi'` the invention on line C-F of Fig. 3; Fig. i2 is i iongitnclinal section on line D-E of Fig. 3; Fig, 3 is a cross Section on line iii-B of Fig. l; Fig. e is o longitudinal section of another :torni oi* embodiment. of my invention, ssiicl section being taken upon the line 'C'.i" of Fig. 6; Fig. 5 is a longitudinal section on line D-E of Fin'. 6; Fig. 6 is a cross Section on line rif-B of Fig. It; and7 Fig. i is :t 'ont View of 'the forni or embodiment o my invention shown in Fig. 4i.

Similar; ietters of reference refer to similar parte in ell the views.

Referring to Figs. l. and 3 the siren illustrated consists of cylindrical casing o and a rotziy part a. The casing c is made integral with a tubulin connection d, e central heating n, an innei seat 0 and a concentrio cylindrical wall y?. The seat o and the Wall 72 tomi a contra-l chamber in which the rotary par-i' viz. :i hollow (lum, tits. The drum z has a pivotI l), which is mounted to turny in thei eating fn, sothut the drum o onri'-iotale eely in the said Chamber. The drum. has several, herein four, long slots g g placed mtlially and in the direction of its axis.

The c as described so far is sirnilar to that of known sirens and may be supported in any known manner. n Contra- (liction to the known sirens, however, the innlineol slots j e' of smid Casing o are noty placed all in the sani@ sense, buty part thereof are inclined in one and part in the othei (iireoiion. Thus two opposite, inclined slots f are provide in the cylindrical wall p, hoth. pinned or inclined in the Sarno (ii- I'e(-.ti n. while two othoi` opposite, inclined slots 2' 1f are provided in the Woll p and both pln'oeil or inclineol intho opposite direction to the slots f j, is (,'lezirly shown at Fig. 3, The :iron of the two slots z' i is made smaller than that of the two slots ln4 Fig. Q the (lx'nxn L occupies such n. position, that. ull of its slots (I g register with the slots f 1,' f i in the well p of the casing c, although that. is not :ilisolutel y necessary. lt is evident, that the slots z' i'. are opposite to one another and also the slots f f are opposite to one another, the drum aV will oe balani-ed. so that it can easily rotate. Preferably two special chambers /e /i are provided in the casing c opposite to ontI another'. they beingf Atorined by. radial partitions and bottoms Z The two chambers t k communicate with the greater chamber c in the casing c through openings or slots ImI and belong to the tivo inclined slots z'. 'i'. ot' smaller area.y The tubular connection (I of the casiupr c is to be connected by means of a` suitable tube or tube system with the source of dri\ inir medium under `uessure. avstop valve L (shown in Fig. 4) or the like being preferably inserted between the connection (l and the tube or tube system or atany other suitable location.

lVhen the stop valve b or the like is opened, the driving medium under pressure will enter the chamber c through the tubular connection f?, pass through the slots ff of the casing and the slots u g ot the drum a and escupe from the cavity of the latter. As the jets of medium under pressure strike the opposite walls ot' the radial slots'g g, the drum a is thereby7 driven in one direction, viz. contranclockwise in Fig. 3, at first slowly, but afterward at an increasing speed. As, however, the niedium under pressure also enters the two small chambers h h through the openings m and passes periodi cally through the oppositely inclined slots '2f i of the casing and through the radial slots g q of the drum` the consequence will be that the drum a is alsosubjected to forces tending to drive it in the opposite direction, with the result, that it is driven by the difference of the oppositely directed forces and at a speed, which is practically nearly oonstant. This is explained by the fact. that the pressure of the tluid flowing through the slots f f against the opposite walls of the radial slots g g will gradually diminish in proportion as the said walls more rapidly recede, and in case of the slots that the pressure of the ,fluid will gradually increase as the op osing walls of the radial slots more rapit ly approach. As is well known, the pitch of the tone produced by the intermitting ets of medium escaping from the cavity o; the drum depends upon the speed of the drinn a and upon the pressure of the medium. It is evident, that' by regulating the pressure of the medium hy more or less opening the said stop valve b or the like Vit is easv'to alter at will the pitch of the tone and t us to give signals of any kind. It is also obvious, that by proportioning the areas of the oppositely inclined slots in proportion to one another the siren can be adjusted for an pitch of the sound. For example. insteac of providing the inclined slots f f in the wall p slots f f may be rovided opposite each other in the Walls o hollow cylinders fw, as shown in the modified construc-l tion illustrated in Figs. to 7. In each hollow 'cylinder w there is provided in thimoditicationa sleeve 'having slots e r and a plug r rovide with a slot u. The sleeves g and t e plugs r can each be turned separately by inserting any suitable instru- J. y ment into the slots t t and a provided in the outer ends of said sleeves and plugs respee tively (see Figs. 4 and 7). By turning the sleeves g it will therefore be apparent that said sleeves may be so adjusted as to vary or determine as desired the size or the number of the slots f f. It will also bc apparent furthermore that by turning the pluus 1- relatively to the sleevesv the inclination of all or any number of t e slots 11 may be varied or adjusted as desired. It will be self-evident that by simultaneous relative adjustment of the. sleeves g and the plugs r the size1 number and inclination of the slots u can be simultaneously varied. In the same manner. instead of providing the incliiud slots z' i" in the wall yi, as shown in Fig. 3. slots z" z' may be provided opposite cach other in hollow cylinders a, and in said hol` low cylinders may be provided rotatablrl t .i sleeves q provided with opposed slots u u'. and Within said rotatable sleeves rotatable plugs r having slots u', said cylinders u. sleeves g with their slots o e and said plugs r with their slots u being in all rc` i.. spects similar to the cylinders fw, sleeves g, slots yv o and plugs r with their slots u above described. It will thus be seen that the same adjustment or variations can be effected in respect to the slots 2" i. as above described in respect to the slots f f. The number of slots f and i' may be increased and the slots may be disposed in groups und de vices of any known construction may be provided for closing and opening :it will any or all of the groups of slots for varying the tone or giving signals of any kind.

The siren descrlbed can be varied in uuiny respects without departing from the spirit of my invention.

I claim:

1. In a siren of the class descrita-d. the combination with a casing havingr an outer wall and aninner circular Wall with slots, of a rotary part having slots adapted to 11.3 periodically register with thebslots in the inner circular wall of said casing. the slots of one part being at right angles to the periphery and the slots of the other part being inclined t the periphery some in one directltnand some in the other direction. the slots inclined in one direction having a larger area than the slots inclined inthe other direction.

2. In a siren of the class described, tlu` combination with a. casing having an outer wall and an inner circular wall with slots and divided by artitions into chambersfbnr municatiniigy wit one another by openings. of a rotarypart having slots adaptind to lull eriolioelj regiser wien elle siete-in lie inner simuler ,Wall or' seni: ceeingg, the ginie er one peri being er, ,periphery en the slots of being inclinecl i the lireeien .seine .in the the elete'inciine i' larger aree tiren Y nher Clireciion,

n e siren ci e conibinatien Wit-li e ce well enel en inner cir@` l of e roi-ery hav' periorlicaliy register with in-, inner circuler" cpenings; i inner circule combinerien W wel! enel en y and divided by "r" ceinrnuniceting Wi" "il s,

1 L e ings7 or rer-ary per to periodically regisei inner circular wail o' .ebp 'shin'wrli or one pair img er iig e ners l,

i casing, lLe

ripherv end the Slos nincline. to the peripliewy U recton and seme in o slots ineline. in 'e ein 2 larger aree lien el@ other direction l openinf inner e 21 it CfiSlI yriglii` angles' yle' ille @ne other part seine in. ene ier fireciinn, ien lie-vine' e. in lie 1 ,.1 .ClrxaCg elle l having einer nier Wall Wien erols ne enoilicr openn 1 Ming; slots e lepteci ipltirne siete n. ne

L Sleie 0 lie pebe .1g

in e siren of' he clase iescri'nec, the

coinbinntinn wiili e Casin@ 'neving wall and an inner eircn .r

inclined to ille periphery Sonie in one en @nier well wire. sioe dire@ iion and seine in elle einer direeiion, "elle slots incline@ in one direeion larger .crea 'rhein ilie eloe inclined other direction, ofi reery firnni radial elois adepred to p with the slors in the inner Seirleesing.

6. lfn a siren o the clase described, combination With e casing Well enti an inner circuler incline-rl he periphery /1 lievi-ng an oue Well with gioie seine in one Curesiiavin e in elle having eriorlicelly regiser circuler Well of' 'tion anni .seine ,in the einer direction and rlividefl. lijf neriiiiens inc eliainloers renminni- ,Celi Wiili ene another by openini slots larger aree other direction, of

LA the inclined in one clireci-ion having u than the slots inclined in the ey rotary drinn 'having radial siete adepiecl te periedieally register with the slots in hc inner circular well oi 55 seicl freeing.

. siren ille einen escrieerl, the eenibineion willi e casing having an. ouer circular wall with slots l ipl'iery some in one cli- .n lie einer direction, the

Sem

in one (liree'iin lmvmg a lerfrer rea lien the slots inclined in the einer aires-nen, of a rfery drum having siete te periodically register alle eloe ine inner circuler Wall' 0i enrl means' for closing and open'- eri of 'rile slois the inner 'cire-ula? well oeairl casing.

in zi siren of the class described, the 'en wiili :i lien/ing an ouer Well enel' en inner circular Wall with slofs ineiineci '55o ilie periphery some in one direc# e other iirec'tion and' (liion :incl sono in `one' ino elieniners commen?- ne enetirer by openings, ih'e in one direction having e f Slots inelined in the roi-ary drum having .ecl io periodically register inner circular Well of ineens 'Enr closing and openone pe ei' the sle-s in the inner eircuier sein casing.

i. In Siren i. ine clasedescribe, elle oembinetion Wiili a casing having en eu'er well en" an inner circuler Weil Wi'rh slots ger er A other irecriim recliel eloe slois in to *lle peripheryome in one cli/reeion ene', @eine in ille on'er direction, lie' sims incline@ in one rlireetion 'having si larger iban the slol's inclined in the other clreeioir, of e rotary drum having ecleperl io perieieally register @Wes in eine inner circule-r Weil o' and ineens for varying; the angle on ef some er ell e ille slots in seid casing.

inelil ine inner circuler wall ef in sir the. clase fiescrloed, the ccnibn 'ion einen ceeingg leaving :in ouer wall an inner circuler Wall with slots ineline in the periphery sence 1n one direcion and some "ine other direction and l- .ri-flefl ev nertiions inio chambers commu- Jeinig 'with one another by openings, the fi. in one direction having a lan the slots inclined in the f of e ro'ery drum having fel eler ll to periodically register with ehe slczs in lie inner circular Well of seirl casi g, ineens 'for varying the angle indi ation ef scmefer all of the slots in i eireuier Wall of Said easing.

of the clase flescribe, the c-oinloineiien wili e casing having en outer Well and en inner circular Wall with slots inclined. te (he periphery some in one clirecilion. and seine in the other direction, the slots inclined in one direciion having a larger area than the Slots inclined in' the other direction, of e interv drum lia-ving radial elos adapter? Le periodically register with the slots in the inner circular wall of said casing, .means for varyin the an le of itiolirihiion of some or all of t e slots 1n the inner-'circular wall of said casing, and for closing and' opening at will one part of the Slots 1n the inner circular Wall of said Acaf;-

12. In a siren of the class describedgthe combination with a casing having an outer wall and an inner circular wall with;slots vinclined to the periphery some in one dition and some in the other direction and divided by partitions into chambers commu- Anicfiting with one another by openings, the slots inclined in one direction having a larger area. than the slots inclined in the' 'rther direction, of a rotary drum having radial Slots adapted to periodically register with the slots in the inner circular wall of said casingmeans for varying the angle of inclination of some or all of the slots in the wall and an inner circular wall with slots,`

of arotary part having slots adapted periodically to register with the slots in the inner circular wall of said casing, the slots of one of said parts being directed perpendicularly to the periphery and the slots in the other of said paris being inclined tothe eriphery in opposite directions und of diferent'areas.

' MARTIN ROELLIG. Witnesees':

' WOLDEMAB HAUPT,

BRUNO Brunn. 

